Event: Division B

Opponent Rating Result
Nicholas Baranaby 174 ½ - ½
John Whitfield 159 1 - 0
Chris Jardine 155 1 - 0
Steve G Hughes 129 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

454 = (617 + 400 * (3 - 0)) / 4)

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